HCCI Combustion With Internal Fuel Reforming, Varied Levels of EGR and Charge Preheat - A Computational Study 2005-01-0140
This paper investigates the expansion of the HCCI operating range and combustion control by use of internal fuel reforming with subsequent reduction of NO emissions through Exhaust Gas Recirculation (EGR). The study is focused on multi-step simulation of the engine cycle, comprised of a fuel reformation cycle and a HCCI combustion cycle, with and without EGR. The study is carried out using a single-zone well-stirred reactor model and established reaction mechanisms. The HCCI engine cycle is fueled with a lean mixture of air and ethanol. This study demonstrates that supplementing EGR with internal reforming reduces the NO emissions level. Furthermore, the study shows that internal fuel reforming extends the operational range of HCCI engines into the partial load region and is effective in the combustion onset control. However, the model requires several enhancements in order to moderate the cycle pressure rise and pressure magnitude, and to lower the cycle temperatures and NO emissions.
Citation: Gnanam, G., Johnson, M., Sobiesiak, A., and Reader, G., "HCCI Combustion With Internal Fuel Reforming, Varied Levels of EGR and Charge Preheat - A Computational Study," SAE Technical Paper 2005-01-0140, 2005, https://doi.org/10.4271/2005-01-0140. Download Citation
G. Gnanam, M. Johnson, A. Sobiesiak, G. Reader
University of Windsor
SAE 2005 World Congress & Exhibition
Homogeneous Charge Compression Ignition (HCCI) Combustion on CD-ROM from the SAE 2005 World Congress-SP-1982CD, Homogeneous Charge Compression Ignition (HCCI) Combustion 2005-SP-1963